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configuration of Cr is 3d5 4s1 can we consider it as violation of aufbaus building up principal..?

configuration of Cr is 3d5 4s1
can we consider it as violation of aufbaus building up principal..?

Grade:12

1 Answers

Aarti Gupta
askIITians Faculty 300 Points
9 years ago
It is not regarded as violation to Aufbau's principle,in fact this configuration of Cr is related to the extra stability of half filled d-orbitals.Half filled and fully filled d-orbitals have greater stability so one of the e- promotes from s-orbital to the d-orbital of Cr.Such configurations are regarded as exceptional configuration.
Thanks & Regard
Aarti Gupta
askiitians Faculty

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